Rotary drilling-machine.



C. S. WRIGHT.

ROTARY DRLLlNG MACHINE.

APPLICATION IIIIID 1115.24, 1914.

Patented Mar. 9, 1915.

4 SHEETS-SHEET l.

INVENTOR 250% Zw MM.

A C. S. WRIGHT.

ROTARY DRILLING MACHINE.

APPLICATION FILED H1124, 1914.

4 SHEETS-SHEET 2.

LLILOO.

U. S. WRIGHT. ROTARY DRILLING NLAXCHIBUEI4 APPLICATION FILED 1113.24, 1914.

Patented Marlsa,1915.

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1 131 100, 1 Patented Mar.9,1915. 4 EEEE UTS-SHEET 4,

NTED STATES PATENT OFFCE. l

CLY'DE S. WRIGHT, OF TOLEDO, OHIO, ASSIGNO TO THE NATIONAL SUPPLY COMPANY, OF TOLEDO, OHIO, .A CORPORATION OF OHIO.

ROTARY DRILLIN G-MACHIN E.

Speeication of Letters Patent. Patented B131', 9,19]

Application led February 24, 1914. Serial No. 820,554.

To aZZ'fwzom it may concern Be it known that I, CLYDE S. WRIGHT, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio,.have invented new and useful Improvements in Rotary Drilling-Machines, of which the following is a specificat1on.

My invention relates to rotary drilling machines but more specifically it relates to improvements in the means for mounting, controlling andl operating the screws by which the roller gripping jaws are operated.

Some of the objects of this invention are to provide hand wheels for the said screws; to provide angular hubs for the hand wheels so that a wrench can be used to turn the screws; to provide a driving fork for` each screw so constructed as to allow a maximum life of the gripping jaws without losing driving connection with the rotary table; to provide removable means for locking the screws to the driving forks so as to prevent the rotation of the screws; and to provide an improved means for removably locking the nuts or sleeves which work on the said screws 'so that the screws may be rotated in the nuts or sleeves.

Other objects will appear hereinafter.

Referring to the drawings, Figure l is a plan of a rotary table equipped with my invention; Fig. 2, a side elevation of Fig. 1 with parts in section; Fig. 3, an elevation of the upper part of Fig. l looking toward the left; Fig. 4, a section on the line IV--IV of Fig. 2; Fig. 5, a section on the line V-V of Fig. 4; Fig. 6, an elevation of a driving fork with the shaft of the screw shown in section; Fig. 7, an enlarged end elevation of one of the jaw-adjusting screws and the nut or sleeve cooperating therewith together with the sleeve locking device; Fig. 8, an elevation looking at Fig. 7 toward the left; Fig. 9, an elevation of the sleeve locking device and adjacent parts; Fig. 10, a side elevation of the sleeve locking device; Fig. 11, a vertical longitudinal section through the axis of the said sleeve, the screw being shown in side elevation in the sleeve; Fig. 12, a section on the line XII-XII of Fig. 11; and Fig. 13, a section on the line XIII-XIII of Fig. 2.

On the drawings, 1 is a rotary horizontal table driven by the bevel gearing 2 and supported on rollers (onemarked 3 being shown) supported by the base 4.

The horizontal parallel screws 5 are supported on the table at opposite sides of its center. The table is provided at opposite sides of its center with the sockets 6 in which the lower ends or stems 7 of the driving forks 8 are mounted so that the latter may both oscillate and reciprocate in the sockets. The driving forks have above lthe stems 7 the vertical slots 9 to receive the Shanks l0 of the screws 5. The screws each have the fixed collar 12 engaging one face of the adjacent fork 8. The other face of each fork 8 is engaged by the hexagonal hub 13 of the hand-wheel 14 secured to the associated screw 5. One end of each screw has right-hand threads and the other left-hand threads. The outer ends of each screw have square or-angular portions 15, to which a wrench or crank can be applied to turn it. A wrench may be applied to the angular hub 13 for the purpose of turning .the screw. Fach .driving fork 8 is provided with a central vertical -hole 1G to receive the locking pin 17, which-may be passed down through the hole 1S in the shank 10 to lock the screw to the fork 'an'd prevent the former from rotation.

At right angles to the screws 5, I arrange the two bars or carriers 19 for the roller grips 20, one bar being at each side of the center of the table, each carrying a pair of grips arranged to engage the sides of the pipe 2l in a well-known manner. The ends of the carriers are all constructed alike so that a description of one will suiice for a description of all. On Figs. 12 and 13, I show the end of one carrier 19. The said end is provided with a pair of horizontal projections or extensions 22 and 23, one continuous with the upper part of the carrier, and the other with the lower part thereof, whereby a considerable space is left between the projections 22 and 23 for the swivel devices. The lower face of the projection 22 is provided with the short vertical cylindrical swivel-bearing 24 and theupper face of the projection 23 is provided with the short vertical cylindrical swivel-bearing 25, the bearings 24 and 25 being in' vertical alinement.l A swivel-block 26, divided into lateral halves 27 and 28 by a plane at rightangles to the screws 5, has at its ends recesses 29 to receive the bearings 24: and 25 and constitute bearing boxes therefor. The block 26 has a round horizontal opening 3G 60 :from each other soA as to cause the roller therein to receive the body of the sleevenut 81, having the lange 32 bearing against the outer face of the section 27 and provided with notches 3,3 to receive the spring-actuated pin 34 seated in a hole in the sections 27 and 28, the said. pin. locking the sleevenut in any selected aXial adjustment thereof. The inner end of the sleeve-nut 31 is provided with the washer 35 which rests against the outer face of the section 28, the nut 36 being screwed on the threads 37 on the end of the sleeve-nut 31 and against theA Washer 35. IThe outer end of the sleeve-nut 31 is provided with a squared portion 38 by which it may be rotated. The sleeve-nuts 31 are all internally threaded and work on the threads of the screws 5 which extendv through them. These sleeve-nuts have several oil-holes 39 which receive oil from the ducts 39 in the sections .27 and 28 and convey it to the screws 5.

The outer end of each locking-pin 34 has the projection 40 extending at right angle from the body of the pin, which is in a hole 41. The inner end oi' the hole 41 contains the expansion spring 42 which continually urges the pin 34 outwardly. The projecttion 40 may be swung up or down from its central, that is, horizontal position', so as to 43 in the outer end of the section @it of the swivel-block 26. When the projection 40 lies beneath the flange 32 andin theI recess 43 (Figs. 3 and 8), the sleeve-nut 31' can be rotated by applying a wrench or other tool to the angular end 38 thereon. Ii' the projection 40 be swung to a horizontal position or in line with the radius of the sleevenut (Figs. 7 and I1) the outer end of the pin 34 will be forced ,out by the spring 42 into any notch 33 which may happen to be opposite the pin or which maybe brought opposite thereto. When the pin 34 is in a notch 33 the sleeve-nut which carries the said notch is `locked from rotation. The outer end of the pin 34 is beveled as shown at 44 to facilitate its entrance into the notches.

When the pins 17 are inserted thrpugh the driving forks 8 and the screw-shank 10, and the projections 40 are swung beneath' the iianges 33, the bars 19 may be moved one way or the other, causing the roller grips 2O to engage or release the pipe 21. When the pins `17 are removed and the pins 34 are disposed so as to lock the several sleeve-nuts from rotation, the screws 5 may be rotated by applying a wrench or the like to the ends 15 of the screws, whereby the bars 19 may be Imoved toward or away grips 20 to engage or release the pipe 21.. The screws may'also be rotated by the handwheels 14 or by wrenches or the like plied to the angular hubs 13.' Itis seen that,

lie beneath the 4*flange 82 and in the recess if one of the screws 5 is rotated, two of the ends of the carriers 19 will be brought toward or away `from each other without it` stems 7 in the sockets 6 without danger of lifting the vstems entirely out of the sockets and thereby severing the driving connections between the table 1 andthe screws 5.

Modifications of the details and combinations thereof herein described may be made without departing from the spirit of my invention.

I claim- 1. In a rotary drilling machine, a rotary table, a pair of opposed gripper carriers thereon, a pair of screws for moving the carriers toward and away from each'other, r0- tary sleeve-nuts for the screws carried by the carriers, means for rotating the screws, said sleeve nuts provided with means whereby they may be rotated, means for releasably preventing the rotation 4of the screws, and

` means for releasably preventing the rotation of the sleeve-nuts.

In a rotary drilling machine, a rotary table, a pair of opposed gripper carriers thereon, a pair of opposed screws for moving the carriers toward and away from each other, and a driving-fork for each screw, comprising a stem carried by the table and a vertically slotted upper end, the screws being seated in the slots in the respective driving-forks and vertically movable therein.

3. In a rotary drilling machine, a rotary table, a pair of opposed gripper carriers thereon,a pair of opposed screws for Inoving the carriers toward and away from each other,a driving-fork for each screw, comprising a stem carried by the table and having a vertically slotted upper end, the screws being seated in the slots in the respective driving-forks, and means for locking each screw and its respective driving-fork together. e

4. Ina rotary drilling machine, a rotary table, a pair of opposed gripper carriers thereon, 'a pair of opposed screws for moving the carriers toward and away from each other, a driving-fork for each screw, comprising a stem carried by the table and having a vertically slotted upper end, the

screws being seated in vthe slots in the respective driving-forks, and a locking pinextending vertically through the slot in each driving-fork and through its respective 5. In a rotary drilling machine, a rotary table,- a pair of opposed gripper carriers thereon, a pair of opposed-screws for moving the carriers toward and away from each other, a driving-fork for each screw, comprising a stem carried by the table and having a vertically slotted upper end, the screws being seated in the slots in the respective driving-forks, and means for locking each screw andits respective driving-fork together, so that the screw cannot rotate but*r adapted to enter any one of the notches when in line therewith, the said pin having a means for preventing the entrance of the pin into a notch in line therewith.

7. In a drilling machine, a pair of opposed gripper carriers, a pair of screws for moving the carriers toward and away from each other, rotary sleeve-nuts for the screws carried by the carriers, the sleevenuts being provided with a circular series of notches, and a spring-pressed rotatable pin adapted to enter any one of the notches when in line therewith, the said pin having a lateral projection adapted to lie beneath the flange and thereby prevent the pin from entering any notch.

Signed at Toledo, Ohiothis 21st day of February A. D..1914.

c. s. Winer-IT.Y

Vitnesses M. N.- TABER, IV. H. WOLFGANG.,

` Copies of this patent may be obtained for ve cents each, by/ addressing the Commissionex` of Patents,

' Washington, D. C. 

